Metricbeat downsample

I was looking to work on downsample. By reading this

[Downsampling a time series data stream | Elasticsearch Guide [8.17] | Elastic]
(Downsampling a time series data stream | Elasticsearch Guide [8.17] | Elastic)

But it seems default metricbeat template that gets loaded when you turn on does not have any field with time_series_metric enable hence you can't downsample it. I was checking fields.yml which gets loaded as default template in /etc/metricbeat/

is this true? or am I missing something?